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Observations on fluid flow from exposed dentine in primary teeth: An in vitro study
Monticha Rangcharoen1, Varisara Sirimaharaj1, Sitthichai Wanachantararak2
1Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50202, Thailand.
Archives of Oral Biology
|September 4, 2017
Summary
Fluid flows from exposed primary teeth dentine, similar to permanent teeth. Etching dentine prevented fluid droplet formation, suggesting absorption by the dentine matrix.
Area of Science:
- Biomaterials Science
- Dental Research
- Fluid Dynamics
Background:
- Dentine's complex structure facilitates fluid movement.
- Understanding fluid dynamics in primary teeth is crucial for pediatric dental care.
Purpose of the Study:
- To investigate in vitro fluid flow through primary teeth dentine.
- To compare fluid flow in primary dentine with permanent dentine.
Main Methods:
- Utilized the replica technique on 22 extracted primary incisors.
- Applied varying pulpal pressures (0-45cm H2O) to exposed dentine surfaces.
- Examined replicas using scanning electron microscopy.
Main Results:
- Fluid droplets observed on unetched primary dentine at all tested pressures.
- Droplet size increased significantly with higher pulpal pressures.
- No fluid droplets were detected on etched dentine surfaces.
Conclusions:
- Exposed primary dentine allows fluid to flow, mirroring findings in permanent teeth.
- Etched dentine appears to absorb fluid, preventing outward flow through tubules.
- Results inform understanding of dentinal fluid dynamics in deciduous teeth.
